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Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/genflags.c')
| -rw-r--r-- | gcc-4.2.1-5666.3/gcc/genflags.c | 281 |
1 files changed, 0 insertions, 281 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/genflags.c b/gcc-4.2.1-5666.3/gcc/genflags.c deleted file mode 100644 index 30e9c7e10..000000000 --- a/gcc-4.2.1-5666.3/gcc/genflags.c +++ /dev/null @@ -1,281 +0,0 @@ -/* Generate from machine description: - - some flags HAVE_... saying which simple standard instructions are - available for this machine. - Copyright (C) 1987, 1991, 1995, 1998, - 1999, 2000, 2003, 2004 Free Software Foundation, Inc. - -This file is part of GCC. - -GCC is free software; you can redistribute it and/or modify it under -the terms of the GNU General Public License as published by the Free -Software Foundation; either version 2, or (at your option) any later -version. - -GCC is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -for more details. - -You should have received a copy of the GNU General Public License -along with GCC; see the file COPYING. If not, write to the Free -Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301, USA. */ - - -#include "bconfig.h" -#include "system.h" -#include "coretypes.h" -#include "tm.h" -#include "rtl.h" -#include "obstack.h" -#include "errors.h" -#include "gensupport.h" - -/* Obstack to remember insns with. */ -static struct obstack obstack; - -/* Max size of names encountered. */ -static int max_id_len; - -/* Max operand encountered in a scan over some insn. */ -static int max_opno; - -static void max_operand_1 (rtx); -static int num_operands (rtx); -static void gen_proto (rtx); -static void gen_macro (const char *, int, int); -static void gen_insn (rtx); - -/* Count the number of match_operand's found. */ - -static void -max_operand_1 (rtx x) -{ - RTX_CODE code; - int i; - int len; - const char *fmt; - - if (x == 0) - return; - - code = GET_CODE (x); - - if (code == MATCH_OPERAND || code == MATCH_OPERATOR - || code == MATCH_PARALLEL) - max_opno = MAX (max_opno, XINT (x, 0)); - - fmt = GET_RTX_FORMAT (code); - len = GET_RTX_LENGTH (code); - for (i = 0; i < len; i++) - { - if (fmt[i] == 'e' || fmt[i] == 'u') - max_operand_1 (XEXP (x, i)); - else if (fmt[i] == 'E') - { - int j; - for (j = 0; j < XVECLEN (x, i); j++) - max_operand_1 (XVECEXP (x, i, j)); - } - } -} - -static int -num_operands (rtx insn) -{ - int len = XVECLEN (insn, 1); - int i; - - max_opno = -1; - - for (i = 0; i < len; i++) - max_operand_1 (XVECEXP (insn, 1, i)); - - return max_opno + 1; -} - -/* Print out a wrapper macro for a function which corrects the number - of arguments it takes. Any missing arguments are assumed to be at - the end. */ -static void -gen_macro (const char *name, int real, int expect) -{ - int i; - - gcc_assert (real <= expect); - gcc_assert (real); - - /* #define GEN_CALL(A, B, C, D) gen_call((A), (B)) */ - fputs ("#define GEN_", stdout); - for (i = 0; name[i]; i++) - putchar (TOUPPER (name[i])); - - putchar('('); - for (i = 0; i < expect - 1; i++) - printf ("%c, ", i + 'A'); - printf ("%c) gen_%s (", i + 'A', name); - - for (i = 0; i < real - 1; i++) - printf ("(%c), ", i + 'A'); - printf ("(%c))\n", i + 'A'); -} - -/* Print out prototype information for a generator function. If the - insn pattern has been elided, print out a dummy generator that - does nothing. */ - -static void -gen_proto (rtx insn) -{ - int num = num_operands (insn); - int i; - const char *name = XSTR (insn, 0); - int truth = maybe_eval_c_test (XSTR (insn, 2)); - - /* Many md files don't refer to the last two operands passed to the - call patterns. This means their generator functions will be two - arguments too short. Instead of changing every md file to touch - those operands, we wrap the prototypes in macros that take the - correct number of arguments. */ - if (name[0] == 'c' || name[0] == 's') - { - if (!strcmp (name, "call") - || !strcmp (name, "call_pop") - || !strcmp (name, "sibcall") - || !strcmp (name, "sibcall_pop")) - gen_macro (name, num, 4); - else if (!strcmp (name, "call_value") - || !strcmp (name, "call_value_pop") - || !strcmp (name, "sibcall_value") - || !strcmp (name, "sibcall_value_pop")) - gen_macro (name, num, 5); - } - - if (truth != 0) - printf ("extern rtx gen_%-*s (", max_id_len, name); - else - printf ("static inline rtx gen_%-*s (", max_id_len, name); - - if (num == 0) - fputs ("void", stdout); - else - { - for (i = 1; i < num; i++) - fputs ("rtx, ", stdout); - - fputs ("rtx", stdout); - } - - puts (");"); - - /* Some back ends want to take the address of generator functions, - so we cannot simply use #define for these dummy definitions. */ - if (truth == 0) - { - printf ("static inline rtx\ngen_%s", name); - if (num > 0) - { - putchar ('('); - for (i = 0; i < num-1; i++) - printf ("rtx ARG_UNUSED (%c), ", 'a' + i); - printf ("rtx ARG_UNUSED (%c))\n", 'a' + i); - } - else - puts ("(void)"); - puts ("{\n return 0;\n}"); - } - -} - -static void -gen_insn (rtx insn) -{ - const char *name = XSTR (insn, 0); - const char *p; - int len; - int truth = maybe_eval_c_test (XSTR (insn, 2)); - - /* Don't mention instructions whose names are the null string - or begin with '*'. They are in the machine description just - to be recognized. */ - if (name[0] == 0 || name[0] == '*') - return; - - len = strlen (name); - - if (len > max_id_len) - max_id_len = len; - - if (truth == 0) - /* Emit nothing. */; - else if (truth == 1) - printf ("#define HAVE_%s 1\n", name); - else - { - /* Write the macro definition, putting \'s at the end of each line, - if more than one. */ - printf ("#define HAVE_%s (", name); - for (p = XSTR (insn, 2); *p; p++) - { - if (IS_VSPACE (*p)) - fputs (" \\\n", stdout); - else - putchar (*p); - } - fputs (")\n", stdout); - } - - obstack_grow (&obstack, &insn, sizeof (rtx)); -} - -int -main (int argc, char **argv) -{ - rtx desc; - rtx dummy; - rtx *insns; - rtx *insn_ptr; - - progname = "genflags"; - obstack_init (&obstack); - - /* We need to see all the possibilities. Elided insns may have - direct calls to their generators in C code. */ - insn_elision = 0; - - if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE) - return (FATAL_EXIT_CODE); - - puts ("/* Generated automatically by the program `genflags'"); - puts (" from the machine description file `md'. */\n"); - puts ("#ifndef GCC_INSN_FLAGS_H"); - puts ("#define GCC_INSN_FLAGS_H\n"); - - /* Read the machine description. */ - - while (1) - { - int line_no, insn_code_number = 0; - - desc = read_md_rtx (&line_no, &insn_code_number); - if (desc == NULL) - break; - if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND) - gen_insn (desc); - } - - /* Print out the prototypes now. */ - dummy = (rtx) 0; - obstack_grow (&obstack, &dummy, sizeof (rtx)); - insns = XOBFINISH (&obstack, rtx *); - - for (insn_ptr = insns; *insn_ptr; insn_ptr++) - gen_proto (*insn_ptr); - - puts("\n#endif /* GCC_INSN_FLAGS_H */"); - - if (ferror (stdout) || fflush (stdout) || fclose (stdout)) - return FATAL_EXIT_CODE; - - return SUCCESS_EXIT_CODE; -} |